From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>, Jonathan Corbet <corbet@lwn.net>,
Peter Hurley <peter@hurleysoftware.com>,
Russell King <rmk@arm.linux.org.uk>
Cc: linux-serial@vger.kernel.org, linux-doc@vger.kernel.org,
Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH 3/4] serial: doc: .(un)throttle() are serialized by the tty layer
Date: Thu, 14 Apr 2016 11:08:10 +0200 [thread overview]
Message-ID: <1460624891-8389-4-git-send-email-geert+renesas@glider.be> (raw)
In-Reply-To: <1460624891-8389-1-git-send-email-geert+renesas@glider.be>
Document that .(un)throttle() are serialized with each other, and with
termios modification by the tty layer.
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Documentation/serial/driver | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 03b703cf93182216..7fb80682e394eb76 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -137,7 +137,8 @@ hardware.
should be sent to the serial port.
This will be called only if hardware assisted flow control is enabled.
- Locking: none.
+ Locking: serialized with .unthrottle() and termios modification by the
+ tty layer.
unthrottle(port)
Notify the serial driver that characters can now be sent to the serial
@@ -145,7 +146,8 @@ hardware.
disciplines.
This will be called only if hardware assisted flow control is enabled.
- Locking: none.
+ Locking: serialized with .throttle() and termios modification by the
+ tty layer.
send_xchar(port,ch)
Transmit a high priority character, even if the port is stopped.
--
1.9.1
next prev parent reply other threads:[~2016-04-14 9:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-14 9:08 [PATCH 0/4] serial: doc: Low Level Serial API Documentation Improvements (take two) Geert Uytterhoeven
2016-04-14 9:08 ` [PATCH 1/4] serial: doc: Re-add paragraph documenting uart_console_write() Geert Uytterhoeven
2016-04-14 9:08 ` [PATCH 2/4] serial: doc: .(un)throttle() depends on hardware assisted flow control Geert Uytterhoeven
2016-04-14 9:08 ` Geert Uytterhoeven [this message]
2016-04-14 9:08 ` [PATCH 4/4] serial: doc: .break_ctl() may sleep Geert Uytterhoeven
2016-04-15 22:01 ` Jonathan Corbet
2016-04-15 22:31 ` Peter Hurley
2016-04-15 22:41 ` Jonathan Corbet
2016-04-15 23:07 ` Peter Hurley
2016-04-16 16:47 ` Jonathan Corbet
2016-04-18 8:24 ` Geert Uytterhoeven
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